Sanitary discharge nozzle for hose



July 5, 1949. THQMSEN 2,475,164

SANITARY DISCHARGE NOZZLE FOR HOSE Filed April 12, 1948 F 4 6 m /9 I Z0 7 2/ 4 a :.L::

2 m L u INVEN TOR. f/Q/CH TH OM5EN ATTORNEY Patented July 5, 1949 UNITED STATES PATENT OFFICE;

SANITARY DISCHARGE, NOZZLE FOR HOSE Erich Thomsen, San Francisco, Calif.

Application April 12, 1948, Serial No. 20,567

road tracks, by means of a water hose, the free end of which has to be carried back and forth by an attendant for filling operations.

It frequently happens that during the operations the free end of the hose is dragged over the ground surface, or accidentally drops to the ground surface, with the result that foreign, contaminating substances are picked up by the discharge end of the hose and are eventually discharged into the tank along with the water.

In the present invention it is proposed to provide a sanitary discharge nozzle for the hose, the nozzle having protecting means for its discharge end which completely covers the latter at all times except during actual dispensing operations.

It is further proposed to arrange the protecting means in such a manner that it may be easily retracted to clear the discharge end for dispensing operations.

It is further proposed in the present invention to arrange the protecting means in the form of two cylindrical sections forming a complete enclosure about the discharge end of the nozzle,

the two sections being hinged so that they may be separated to allow of their retracting movement.

It is a further object of the present invention to provide cooperating means on the nozzle and the cylindrical sections whereby the latter are automatically opened during the retractin movement.

It is further contemplated in the present invention to arrange the opening means for the two cylindrical sections in such a manner that no part thereof will ever contact the discharge end of the nozzle.

And finally, it is proposed to provide a sanitary discharge nozzle of the character described that is very efiicient in operation, convenient in use, practically tamper-proof, rugged and simple in construction, and all parts of which may be readily cleaned from the inside by the mere turning on of the water while the parts are in nozzle protecting position.

Further objects and advantages of my invention will appear as the specification proceeds, and the novel features of my invention will be fully defined in the claims attached hereto.

12 Claims. (Cl. 137-111) The preferred form of my invention is illustrated in the accompanying drawing, in which Figure 1 shows a side view of my sanitary discharge nozzle, with the protecting elements in closed position,

Figure 2, a longitudinal section through the same,

Figure 3, a side view of the nozzle ready for dispensing operations,

Figure 4, a section taken along line 44 of Figure 2, and

Figure 5, a section taken along line 5-5 of Figure 1.

While I have shown only the preferred form of my invention, I wish to have it understood that various changes and modifications may be made within the scope of the claims attached hereto without departing from the spirit of the invention.

Referring to the drawing in detail, my sanitary discharge nozzle comprises in its principal features a pipe section I having a pair of cams 2 mounted on opposite sides thereof, a slide 3 mounted on the pipe section and the cams with freedom of retracting and advancing movement, a pair of semi-cylindrical sections 4 having their rear ends pivoted to the slide as 'at 5 and having shoes 6 mounted for cooperation with the cams 2, a spring I on the pipe section urging the slide forward, and springs 8 interconnecting the two cylindrical sections and tending to close the same.

The pipe I is preferably straight and threaded at its rear end as at 9 for connection to the end of a water hose. The front end of the pipe section is open and has a suitable discharge end I0 connected thereto which is here shown as a short piece of flexible hose secured to the pipe by means of a clamp II. This discharge end is intended for insertion through a hole into the tank into which water is to be delivered.

The two cams 2 are disposed on opposite sides of the pipe section and run longitudinally thereof, extending rearwardly up to the threaded section 9. The front ends of the two cams are tapered as at l2, the taper rising gradually for a short distance and then rising abruptly as at I3 to merge into parallel upper and lower faces H which extend in parallel relation through the major portion of the length of each cam. A disc 15 is mounted upon the pipe immediately forward of the two cams and serves as a stop for the shoes 6, side portions of the disc being cut away to allow of the passing of the springs 8 on opposite sides thereof.

The slide 3 is in the form of a sleeve having a sliding fit on the pipe section I and the side cams 2, and being properly shaped to present material on opposite sides of the cams as at I6.

The sides of the slide have pins 5 projecting radially therefrom, the pins terminating in 3 handles I! projecting outwardly, by means of which the slide may be operated.

The two semi-cylindrical sections 4 are provided, at their rear ends, with overlapping ears l8 whichare piyoted to thepins 5- andwhich are adapted toclose'upon oneanother td-form a complete cylinder when the slide is in an advanced position as shown in Figure 1.

closed as at l9 to entirely cover the discharge end [0 as particularly well illustrated ihiiFiigllitte:-2;3Jlld the two closed ends of the semi .-cylindri cal sec= tions are somewhat spaced from the discharge end I 0 as also shown in Figure 2.

The two semi-cylindrical sections 4 carry, fairly close to their rear ends the shoes -6. ;adapte dto ar. p e p t ac s he -ms.a.=

Wh n s d l it enwarz iposit cn and-t semi cylindrical sections are closed upon; one another to form a complete cylinder,'the four shoes Q'greston the. tapered frontgends of the cams 2. When the slide 3 is retracted by means of ;-tl 1,e

handles -I "l ,theshqes are ma de t'o, ride first on the abrupt tapered sections l3 for spreading-,thetwo emi-c rical sect ons andfi n tneparal faces I 4 for maintaining the two semi-cylindrical e t s z nih emc=;- 0s tion;. Wh n; ackwa d pressure on the handles I1 is released, thefspr-ing 'l -urges the slide-3 forwards allowing ithe-shoes 61170, ride for.wardi on the cams 2 and allowing! the semiecylindrical; sections ,to close, under the tinfluence-of the springs 8;, when the shoes reach the forward, ends :ofrthe cams, Furtherwforward movement of the shoes and the slide isiarrested bythedisc -l 5.;

It will; be, notedgthat 1 at: .the beginning. of, the retracting rnov61 1 1 17,- when ithesshoes t6 ride .on the tapered section l-3-,a-thewcylinder comprising the twosectio'nsd 9w isopened;rathersabnuptly;tandthis" opening movement-is calculated to keepthe closedv front ends .of: thesemiecylindrical; sections out of-contact'with theiront edgeofthe discharge en'dd 0;!

Theislide 13 carries aacollar Zllfiat its rear'endto serve as an: abutment: for the ispringt'k; the other end of the-spring bearing on a-diso lt whiohimay be, loosely mounted; on the pipexsection-l 1 and: held int-place by the hose coupl-ings The operation ofsmy invention. will :belreadilyunderstood from the vforegoing;description.-. The spring .17 normally urges the slide? 32 and .th'e :cyline der, forward. so, as-zto .close: thensemiecylindrical sections 4 uponthedischarge-end I 0 in; thelmanrnor illustrated in, Figure ,2. In: this "position the discharge end of the1nozzle is completelyienclosedwithdraws the discharge end In frorn the, tank whereu nrt e. r nefl i z-r etomat c l -pus the id da e indr all ect onsii watd; aediesn- 't c shoes: 63 e hz h forward-ends 0f the m e; i drica ot onsy nezp u er matically-closed :upon one anotherwbywmeans: of th $prines -.i

The for ward ends of the semi-cylindrical sections are During the dispensing operations the slide may be easily held in its rearward position by merely pressing the front ends of the semi-cylindrical sections against the margin of the hole through which the discharge end l ll'is projected. The closingaction', upon release, takes place immediately and is sufi'ieiently fast to close the cylinder upon the discharge end [0 before the lattepwould reach the ground surface even in case of an accidental dropping of the nozzle.

Thevnozzlelcan be cleaned very quickly by causing the water to run with the cylinder in closed position, in which case the water will force out anywcontaminating matter that may have collected in the crevices.

1;, A sanitarydischarge nozzleior a hose comprising;a; pipe section adapted; for securing upon the hose a discharge end-for the pipe section, a ide re irestable on he p pe se t n, al tudinally split 1 cylinder pivoted upon the slide with freedom ofopening andgclosing movements and shaped: to enclose. the discharge end when the slide is in advanced position, and cooperative means on the pipe section and the cylinder for opening thelatter Whengthe slide isretracted on thepipesection.

2. A sanitarydischarge nozzle for a hose, com:-

pi'ising a: pipe. section; adapted for securing, upon freedom c fyopening and closing movements and shapedto. enclose -the-discharge endv when the slide is in advanced position,- and cooperative means on..the;pipe section and the cylinder-for opening-the-latter when the slide is-retractedon theipipesection; therlatter means being operable to.-rnaintain'. clearanceibetween the cylinder and :theldischargeend :during the opening-movement.

3.= A sanitaryldischarge nozzle ion-a hose; comprising. a pipe section adapted for securing upon the hose, a dischargeend for thepipe section, a slide retractable on the pipe section, a longitudinallysplit cylinder -pivot'ed upon the slide with freedom of opening and closing movements and shapedtoenclose the discharge end when the slide is in advancedposition, and cooperative means on-the pipe-section and the cylinder for opening-the latter when the slide is retracted on the pipe-section,-- the latter means comprisinga cam- -mounted on the pipe section longitudinally and shoes mounted on the cylinder sections and riding on opposite faces of the cam;-

4. A'sanitary discharge nozzle for a hose, comprising a' pipe section adapted for securing upon the h'ose'; a discharge-end for the pipe section, a slide retractable on the pipe section, a longitudinallysplit cylinder pivoted-upon the slide'with freedom of opening and 'closing movements and shaped to enclose: the discharge end I when the slide: is in advanced position; and cooperative means on the pipe section and the cylinder for opening the/latter when the-slide is retra'cted on thepipe-section, the latter means comprising a pair of cams lrnounted longitudinally onthe pipe section-1 andtshoes'rmount'ed on the cylinder sectionsn-and'riding on opposite faces'of the cams.

Slim-sanitary\discharge nozzle for' whose comprising a :pipe @sectiontadapted -for securing-upon the hose, a discharge end forthe pip'else'ctlonya slide retractablepnthepipe :sectionp a longitudinallyzsplit-scylinders-pivoted upon-the slide with freedomof; opening and closing movements and shapcdnto! enclose: the discharge-iendlcwhen gthe slide is in advanced position, and cooperative means on the pipe section and the cylinder for opening the latter when the slide is retracted on the pipe section, the cylinder having means for normally closing the same and the slide hav-- ing means normally urging the same into ad vanced position.

6. A sanitary discharge nozzle for a hose, comprising a pipe section adapted for securing upon the hose, a discharge end for the pipe section, a slide retractable on the pipe section, a longitudinally split cylinder pivoted upon the slide with freedom of opening and closing movements and shaped to enclose the discharge end when the slide is in advanced position, and cooperative means on the pipe section and the cylinder for opening the latte-r when the slide is retracted on the pipe section, the latter means comprising a pair of cams mounted longitudinally on the pipe section and shoes mounted on the cylinder sections and riding on opposite faces of the cams, and the cams being shaped to abruptly open the cylinder at the beginning of the retracting movement so as to maintain clearance between the cylinder and the discharge end.

7. In a sanitary discharge nozzle of the character described, a pipe section having longitwdinal cams on opposite sides thereof, a slide retractable on the pipe section and the earns, a split cylinder having two semi-cylindrical sections with their rear ends pivoted to the slide for opening and closing movements, and shoes on the cylinder sections cooperable with the cams for opening the cylinder when the slide is retracted.

8. In a sanitary discharge nozzle of the character described, a pipe section having longitudinal cams on opposite sides thereof, a slide retractable on the pipe section and the earns, a split cylinder having two semi-cylindrical sections with their rear ends pivoted to the slide for opening and closing movements, and shoes on the cylinder sections cooperable with the cams for opening the cylinder when the slide is retracted, the cylinder sections having closed ends to form a complete enclosure when the cylinder is closed.

9. In a sanitary discharge nozzle of the character described, a pipe section having longitudinal cams on opposite sides thereof, the cams having parallel upper and lower faces through the maj or portions of their lengths and being tapered in their front ends, a slide retractable on the pipe section and shaped for riding upon the major cam portions, a split cylinder having two semicylindrical sections with their rear ends pivoted to the slide for opening and closing movements,

and shoes on the cylindrica1 sections cooperable with the front ends of the cams for opening the cylinder upon initial retracting movement and oooperable with the major portions of the came for maintaining the cylinder open as the retract-- ing movement is continued.

10. In a sanitary discharge nozzle of the character described, a nozzle having a discharge end, and a cylinder mounted upon the nozzle to form a complete enclosure for the discharge end, the cylinder being split longitudinally to present two semi-cylindrical sections having their rear ends pivoted with respect to the nozzle for opening and closing movement, and "the cylinder being retractable upon the nozzle to clear the discharge end for dispensing operations.

11. In a sanitary nozzle of the character described, a nozzle having a discharge end, a cylinder retractable on the nozzle and shaped to normally form a complete enclosure for the discharge end, the cylinder being split longitudinah ly to present two semi-cylindrical sections pivoted at their rear ends for opening and closing movements, and cooperative means on the cylinder sections and the nozzle for automatically opening the cylinder when it is retracted.

12. In a sanitary nozzle of the character described, a nozzle having a discharge end, a cylinder retractable on the nozzle and shaped to normally form a complete enclosure for the discharge end, the cylinder being split longitudinally to present two semi-cylindrical sections pivoted at their rear ends for opening and closing movements, and cooperative means on the cylinder sections and the nozzle for automatically opening the cylinder when it is retracted, with means normally urging the cylinder into advanced position and means normally tending to close the cylinder.

ERICH THOMSEN.

REFERENCES CETED The following refererrces are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,000,332 Dyer Aug. 8, 1911 1,078,213 Patnaude Nov. 11, 1913 2,327,574 Zinkil Aug. 24, 1943 FOREIGN PATENTS Number Country Date 32,817 France Oct. 31, 1927 

